Dell Networking 2024 Reference Manual page 530

Use the no form of the command to enable unverified traffic to flow over the
interfaces.
Syntax
ip verify source {port-security}
no ip verify source
• port-security—Enables filtering based on IP address, VLAN, and MAC
address.
Default Configuration
By default, no sources are blocked.
Command Mode
Interface Configuration mode
User Guidelines
DHCP snooping should be enabled on any ports for which ip verify source is
configured. If ip verify source is configured on an interface for which DHCP
snooping is disabled, or for which DHCP snooping is enabled and the port is
trusted, incoming traffic on the interface is dropped.
Incoming traffic is filtered based on the source IP address and VLAN. When
the port-security keyword is configured, filtering occurs based upon source IP
address, VLAN and source MAC address.
IP source guard also interacts with the port security component. Use the port
security command in interface mode to optionally add checking of learned
MAC addresses. When port security is enabled, MAC learning coordinates
with the IP Source Guard to verify that the MAC address is in the DHCP
binding database. If it is not, port security is notified that the frame is in
violation of the security policy.
Example
console(config-if-Gi1/0/1)#ip verify source
530
IP Source Guard Commands